环氧硅烷室温交联丙烯酸酯共聚无皂水溶胶的研究 Ⅰ.环氧硅氧烷微乳液的制备

Epoxy Silane as an Ambient Crosslinker of Soap-free Acrylate Copolymer Hydrosol Ⅰ.Preparation of Epoxy Silane Microemulsion

介绍了丙烯酸酯共聚无皂水溶胶的室温交联剂———环氧硅氧烷 (KH 5 6 0 )的乳化方法。研究了乳化剂类型、用量以及KH 5 6 0含量对微乳液性能的影响。结果表明 ,OP 10具有较好的乳化效果 ;当ω(OP 10 ) =5 %、ω(KH 5 6 0 ) =4 0 %时 ,微乳液稳定性最佳。微乳液加入无皂水溶胶中制得的交联乳液 (用量为 5 % )室温放置 6个月后性能无明显变化 ,干燥涂膜的交联度达到 93% ,而且具有较好的耐水、耐溶剂性能 (水中溶胀度降低了 83% ,在甲苯中由原来的溶解变为溶胀 115 % )。

An epoxy silane, a new kind of ambient temperature crosslinker for acrylate copolymer soap-free hydrosol is introduced. Some factors affecting the stability of the microemulsion such as kind and content of emulsifiers, content of KH-560 have been studied. When ω(OP-10)=5% and ω(KH-560)=40%, a stable microemulsion is obtained. The shelf stability of curable emulsion comprising of hydrosol is longer than 6 months at room temperature(content of microemulsion is 5%), crosslinking degree of the film is 93% and the film has good resistance to water(swelling ratio decreases by 83%) swelling ratio of 115% in toluene.